--- /dev/null
+Type hb: HBytes_Value @
+Init hb cht_hb_sentinel(&@);
+
+Type hbv: HBytes_Var @
+Init hbv @.hb=0; cht_init_somethingv(&@.sth);
+Fini hbv cht_fini_somethingv(ip, rc, &@.sth);
+
+Type addrmapv: AddrMap_Var @
+Init addrmapv @.am=0; cht_init_somethingv(&@.sth);
+Fini addrmapv cht_fini_somethingv(ip, rc, &@.sth);